OfficeQA smoke variant; deepseek routed to Azure by default

[varunursekar]

• officeqa/baseline/build.e2e.yaml and officeqa/partitions-e2e/ (2 / 3 / 3 cases): a reduced variant with the same seed, target and gateway scopes, six-run budgets and a 25-minute agent clock, mirroring gaia/baseline/build.shell.e2e.yaml. For exercising the machinery end to end after a change; never reported.
• The OfficeQA and BrowseComp-Plus builds now route deepseek-v4-flash to azure_ai/DeepSeek-V4-Flash by default. --param target_model_route= still selects any other deployment.

The variant compiles, and the benchmark-config tests pass.

🤖 Generated with Claude Code

Confidence Score: 5/5

The PR appears safe to merge, with no concrete correctness, security, or repository-rule failures identified.

Summary

• Adds disjoint 2/3/3 development, validation, and test subsets for quickly exercising the complete OfficeQA pipeline.
• Configures six evaluation runs per accessible partition and a 25-minute optimizer-agent clock.
• Routes evaluation and finalization requests to azure_ai/DeepSeek-V4-Flash by default while retaining the target_model_route override.
• Documents the smoke variant as non-reportable benchmark infrastructure.

_{Reviews (1) · Last reviewed commit: "OfficeQA README: list the smoke variant ..."}